maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>({
  1. TResult applePay(
    1. String orderTypeIdentifier,
    2. String orderIdentifier,
    3. String webServiceUrl,
    4. String authenticationToken,
    )?,
  2. required TResult orElse(),
})

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function( String orderTypeIdentifier,  String orderIdentifier,  String webServiceUrl,  String authenticationToken)?  applePay,required TResult orElse(),}) {final _that = this;
switch (_that) {
case _PlatformPayOrderDetails() when applePay != null:
return applePay(_that.orderTypeIdentifier,_that.orderIdentifier,_that.webServiceUrl,_that.authenticationToken);case _:
  return orElse();

}
}